// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CONTENT_COMMON_INPUT_INPUT_EVENT_STREAM_VALIDATOR_H_
#define CONTENT_COMMON_INPUT_INPUT_EVENT_STREAM_VALIDATOR_H_

#include <string>

#include "base/macros.h"
#include "content/common/input/gesture_event_stream_validator.h"
#include "content/common/input/touch_event_stream_validator.h"

namespace blink {
class WebInputEvent;
}

namespace content {

// DCHECKs that the stream of WebInputEvents passed to OnEvent is
// valid. Currently only validates touch and touchscreen gesture events.
class InputEventStreamValidator {
public:
    InputEventStreamValidator();
    ~InputEventStreamValidator();

    void Validate(const blink::WebInputEvent&);

private:
    bool ValidateImpl(const blink::WebInputEvent&, std::string* error_msg);

    GestureEventStreamValidator gesture_validator_;
    TouchEventStreamValidator touch_validator_;
    std::string error_msg_;
    const bool enabled_;

    DISALLOW_COPY_AND_ASSIGN(InputEventStreamValidator);
};

} // namespace content

#endif // CONTENT_COMMON_INPUT_INPUT_EVENT_STREAM_VALIDATOR_H_
